Yes, no, maybe. Depends on how many you come across and how bad you want one. The prices on N frames (and most everything else) has gone through the roof in the last little bit.
Unless it was an older model or like new in the box I would say that's a bit high by at least $100 to $150 bucks, but I see some sell up towards that range these days. Those of us who used to buy them for $200 have a hard time with it, but since 28's are no longer made and the new 27's with the locks are even higher, the 'value' gap between the prices on the 27's and 28's is shrinking and I believe the 28's will continue to appreciate, though never quite achieve the prices of the 27's.
Clear as mud ?